All Contra Costa County library branches offer programs for children, teens, adults and families. All branches will be closed at 6 p.m. Nov. 21 and all day Nov. 22, for the Thanksgiving holiday. For library hours and updated information, call the local branch or 800-984-4636 or visit www.ccclib.org.

One Wacky Winter: 6:30-7:30 p.m. Dec. 10. Randall Metz and the Puppet Company present a mystery about the Grunch — the Grinch’s long-lost brother — and broken toys kidnapped from the toy workshop. For children to age 11.

Lego Creators Club: 2-3 p.m. Dec. 1. Kids can meet other builders and get tips, themes and challenges every month, plus book tie-ins to take home.

Holiday Puppet Show: The Nutcracker: 1 p.m. Dec. 11. Children and all ages are invited to the Puppet Company’s presentation of the seasonal favorite, featuring sugar plum fairies, mouse armies, mechanical toys, the Snow Queen, and a nutcracker who becomes a prince.

Pleasant Hill Teen Advisory Group (TAG): 3:30-5 p.m. Dec. 12. Teens ages 13-18 can meet other teens and the young adult librarian every second Wednesday of the month in Room A to create fun programs and suggest new resources. Participants can receive volunteer hours for their time.

Contra Costa Teen Chess Club: 3-5 p.m. Fridays. Students 12-17 can get instruction and participate in friendly matches and tournaments. Participants who have them are encouraged to bring their own chess board and pieces.

Pleasant Hill Library Book Discussion: 6:30 p.m. in Room A. On Nov. 20, the discussion will be on Tea Obreht’s “The Tiger’s Wife: A Novel.”

Afternoon Book Discussion: 1-2:30 p.m. Dec. 7. Adults can read with others at the library and discuss “The Warmth of Other Suns: The Epic Story of America’s Great Migration,” by Isabel Wilkerson.

Volunteer Orientation: 3-4 p.m. Nov. 24, Dec. 8, 22. Teens and adults can apply to be a library volunteer. Participants will tour the library with staff members who will give them the details of volunteering.

In a video clip recorded by a student, a psychology instructor at Orange Coast College told her class that the election of Donald Trump was “an act of terrorism” – prompting an official complaint from the school’s Republican Club.

Homegrown tech entrepeneurs and educators from West Contra Costa County participate in an Hour of Code event Wednesday at the Richmond Police Activities League aimed at getting more African-Americans, Latinos and minorities into the tech field, as part of Computer Science Education Week, from Dec. 5 to 11.